中国DOS联盟

How to directly call (or load) the ISO file on the CD on the DOS boot CD?

How did you put the ISO file up? The burning software can directly burn it into a CD. ~~Or you can use the DOS version of WINRAR to extract it.

No, he said to boot the CD from the CD.
I also thought about it, but it didn't work.

ISO files can be loaded as virtual drives using SHSUCDHD and SHSUCDX:

Download address: http://www.opus.co.tt/dave/utils.htm

The command to run SHSUCDHD is:

SHSUCDHD ]

Up to five cache image files can be specified

example: SHSUCDHD /F:.\CD.IMG
SHSUCDX /D:SHSU-CDH

Uses the cache file CD.IMG in the current directory and assigns it
the next available drive letter

example: SHSUCDHD /F:CD0.IMG /F:N:\CD1.IMG
SHSUCDX /D:SHSU-CDH,E

Uses the cache file CD0.IMG in the current directory append path and
CD1.IMG from the N drive and assigns the next available drive letters
beginning with letter E (probably E and F)

example: SHSUCDX /U
SHSUCDHD /U

Unloads SHSUCDX then SHSUCDHD from memory

Please clarify the content. The provided text seems a bit jumbled. Could you rephrase or provide more context?

The advantage of doing this is that with only one CD, several bootable CDs can be burned without destroying the original style!!!!!

I've already said that about SHSUCDHD, but it can't boot from an ISO file. Virtual machines can boot from ISO files, but in real mode it's not possible yet, unless programs like GRUB for DOS support it in the future.